[jira] [Commented] (HBASE-5713) Introduce throttling during Instant schema change process to throttle opening/closing regions.
[ https://issues.apache.org/jira/browse/HBASE-5713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14268239#comment-14268239 ] Cosmin Lehene commented on HBASE-5713: -- [~iamknome], [~lhofhansl] is this worth a refresh? Introduce throttling during Instant schema change process to throttle opening/closing regions. --- Key: HBASE-5713 URL: https://issues.apache.org/jira/browse/HBASE-5713 Project: HBase Issue Type: Bug Components: Client, master, regionserver, shell Reporter: Subbu M Iyer Assignee: Subbu M Iyer Priority: Minor Attachments: 5713.txt, patch-v4.patch There is a potential for region open/close stampede during instant schema change process as the process attempts to close/open impacted regions in rapid succession. We need to introduce some kind of throttling to eliminate the race condition. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (HBASE-5713) Introduce throttling during Instant schema change process to throttle opening/closing regions.
[ https://issues.apache.org/jira/browse/HBASE-5713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13294717#comment-13294717 ] Subbu M Iyer commented on HBASE-5713: - Ted: Attached a latest patch. 1. Reduced the throttle time to 100ms. 2. Addressed your comments. All unit tests passed. As a next step, we need to get this tested in a production grade cluster and hope Lars can help us with that. thanks Introduce throttling during Instant schema change process to throttle opening/closing regions. --- Key: HBASE-5713 URL: https://issues.apache.org/jira/browse/HBASE-5713 Project: HBase Issue Type: Bug Components: client, master, regionserver, shell Reporter: Subbu M Iyer Assignee: Subbu M Iyer Priority: Minor Attachments: 5713.txt, patch-v4.patch There is a potential for region open/close stampede during instant schema change process as the process attempts to close/open impacted regions in rapid succession. We need to introduce some kind of throttling to eliminate the race condition. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-5713) Introduce throttling during Instant schema change process to throttle opening/closing regions.
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https://issues.apache.org/jira/browse/HBASE-5713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13261097#comment-13261097
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Zhihong Yu commented on HBASE-5713:
---
For SchemaChangeTracker.java:
{code}
+ Throwable exception
+ ) {
{code}
Please move the second line to the end of the first line.
For CompactSplitThread.java:
{code}
+import java.util.concurrent.*;
{code}
Please restore the individual imports from java.util.concurrent
{code}
while (this.server.getSchemaChangeTracker()
.isSchemaChangeInProgress(tableName)) {
try {
-Thread.sleep(100);
+Thread.sleep(500);
{code}
Why is the sleep interval longer ?
{code}
+ namehbase.instant.schema.throttle.time/name
+ value500/value
+ descriptionThrottle time in millis while closing/re opening impacted
regions
{code}
're opening' - 're-opening'
Since user may choose longer throttle interval,
'hbase.instant.schema.alter.timeout' should made longer.
Introduce throttling during Instant schema change process to throttle
opening/closing regions.
---
Key: HBASE-5713
URL: https://issues.apache.org/jira/browse/HBASE-5713
Project: HBase
Issue Type: Bug
Components: client, master, regionserver, shell
Reporter: Subbu M Iyer
Assignee: Subbu M Iyer
Priority: Minor
Attachments: 5713.txt
There is a potential for region open/close stampede during instant schema
change process as the process attempts to close/open impacted regions in
rapid succession. We need to introduce some kind of throttling to eliminate
the race condition.
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